I got the suspension on my truck in my sig done a few weeks ago, and just a week or so ago I put the wheels/tires on. I dont travel interstates very often but I didnt notice this issue till I took a 4 hour drive. Whats happening is at about 50-75mph I hear a sound almost like a roaring sound and I can feel a slight vibration/grinding feeling in the steering wheel and floor/seat, but I dont think its the tires and heres why. If the pavement is perfectly smooth the sound/feeling is very faint, but when I hit a bump or any imperfection to get the front end to move up and down it gets much worse but only when the suspension unloads (front of the truck is moving up). Also the same happens when I turn the wheel at interstate speeds. Sorry for the long post but I dunno if this is a u-joint issue, hub issue, or me just smokin crack lol. I do appreciate any input...thanks!

 

It might just be the noise and vibration of the tires. Mine took some getting used too. Not sure, might want to get things checked just in case.